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{{Infobox company
'''LEDAS''' is an independent [[software development]] company with offices in four countries and more than 120 developers.
| name = LEDAS
| logo =
| type = Private
| industry = [[Software development]]
| founded = {{start date and age|1999}}
| key_people = Alexey Ershov ([[Chief executive officer|CEO]])<br>David Levin (co-founder)
| products = Geometric solvers, geometry comparison technology, cloud platforms, CAD plugins
| website = {{URL|ledas.com}}
}}


'''LEDAS''' ({{lang-ru|ЛЕДАС}}, LLC ''LEDAS'') is an independent [[software development]] company, specializing in custom [[Computer-aided design|CAD]], [[Computer-aided manufacturing|CAM]], [[Building information modeling|BIM]], and [[3D modeling]] software. Founded in 1999, the company is best known for its 12-year partnership with [[Dassault Systèmes]], during which it contributed to the development of key components of the [[CATIA]] CAD system, and for creating the LGS 2D/3D geometric constraint solvers, whose intellectual property was acquired by [[Bricsys|Bricsys NV]] in 2011.<ref name="isicad-global">{{cite web |title=Russia is the Land of Engineering Software Development |url=https://isicad.net/articles.php?article_num=20905 |accessdate=2026-09-19 |website=isicad.net}}</ref><ref name="worldcad">{{cite web |date=October 2011 |title=Exclusive Q&A: What it means, now that Bricsys bought IP from Ledas |url=https://www.worldcadaccess.com/blog/2011/10/exclusive-qa-what-it-means-now-that-bricsys-bought-ip-from-ledas.html |accessdate=2026-09-19 |website=WorldCAD Access}}</ref>
It specializes in custom [[Computer-aided design|CAD]], [[Computer-aided manufacturing|CAM]], [[Building information modeling|BIM]], [[Digital health|digital healthcare]], and [[3D modeling]] software. Founded in 1999, the company is best known for its 12-year partnership with [[Dassault Systèmes]], during which it contributed to the development of key components of the [[CATIA]] CAD system, and for creating the LGS 2D/3D geometric constraint solvers, whose intellectual property was acquired by [[Bricsys|Bricsys NV]] in 2011.<ref name="isicad-global">{{cite web |title=Russia is the Land of Engineering Software Development |url=https://isicad.net/articles.php?article_num=20905 |accessdate=2026-09-19 |website=isicad.net}}</ref><ref name="worldcad">{{cite web |date=October 2011 |title=Exclusive Q&A: What it means, now that Bricsys bought IP from Ledas |url=https://www.worldcadaccess.com/blog/2011/10/exclusive-qa-what-it-means-now-that-bricsys-bought-ip-from-ledas.html |accessdate=2026-09-19 |website=WorldCAD Access}}</ref><ref>[https://deelip.com/ledas-finds-life-after-dassault-systemes/ Ledas Finds Life After Dassault Systemes]
</ref>


== History ==
== History ==


=== Founding and Dassault Systèmes partnership ===
=== Founding and Dassault Systèmes partnership ===
LEDAS was founded in 1999 a group of academics with backgrounds in artificial intelligence (AI) and mathematics. The first CEO was David Levin, a Candidate of Sciences in physics and mathematics<ref name="cadpoint">{{cite web |date=April 1, 2009 |title=LEDAS marks its tenth anniversary and makes 3D variational direct modeling technologies more accessible |url=https://cadpoint.ru/item/64-------3d----- |accessdate=2026-09-19 |website=CADpoint}}</ref><ref name="isicad-portret">{{cite web |title=A portrait of a Novosibirsk company in the interior of the global CAD and PLM market |url=https://isicad.ru/ru/articles.php?article_num=15615 |accessdate=2026-09-19 |website=isicad.ru}}</ref>
LEDAS was founded in 1999 a group of academics with backgrounds in artificial intelligence (AI) and mathematics. The first CEO was David Levin, PhD in computer science and mathematics<ref name="cadpoint">{{cite web |date=April 1, 2009 |title=LEDAS marks its tenth anniversary and makes 3D variational direct modeling technologies more accessible |url=https://cadpoint.ru/item/64-------3d----- |accessdate=2026-09-19 |website=CADpoint}}</ref><ref name="isicad-portret">{{cite web |title=A portrait of a Novosibirsk company in the interior of the global CAD and PLM market |url=https://isicad.ru/ru/articles.php?article_num=15615 |accessdate=2026-09-19 |website=isicad.ru}}</ref>


In the same year, LEDAS signed a long-term contract with the French company [[Dassault Systèmes]], a global leader in the PLM/CAD market. Over the course of this 12-year partnership, the LEDAS team contributed to the development of key components of the [[CATIA]] V5 and V6 systems, including the CGM geometric modeling kernel and the Constraint Design Solver (CDS). The team also worked on the end-user modules CATIA Product Engineering Optimizer and CATIA Knowledge Advisor. The total volume of work under these contracts exceeded 100 person-years.<ref name="isicad-global" /><ref name="habr">{{cite web |date=October 30, 2019 |title=Russia is a global CAD development center |url=https://habr.com/ru/articles/473694/ |accessdate=2026-09-19 |website=Habr}}</ref>
In the same year, LEDAS signed a long-term contract with the French company [[Dassault Systèmes]], a global leader in the PLM/CAD market. Over the course of this 12-year partnership, the LEDAS team contributed to the development of key components of the [[CATIA]] V5 and V6 systems, including the CGM geometric modeling kernel and the Constraint Design Solver (CDS). The team also worked on the end-user modules CATIA Product Engineering Optimizer and CATIA Knowledge Advisor. The total volume of work under these contracts exceeded 100 person-years.<ref name="isicad-global" /><ref name="habr">{{cite web |date=October 30, 2019 |title=Russia is a global CAD development center |url=https://habr.com/ru/articles/473694/ |accessdate=2026-09-19 |website=Habr}}</ref>
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Starting in 2001, LEDAS developed its own product — the LEDAS Geometric Solver (LGS), initially in a 2D version, with a 3D version released in 2005. The solver was considered the second most widely used geometric constraint solver in the industry, after [[Siemens Digital Industries Software|Siemens PLM Software]]'s [[D-Cubed]]. LGS was licensed to more than ten engineering software vendors worldwide, including [[Cimatron]] (later part of [[3D Systems]]) and [[CD-adapco]] (later part of [[Siemens Digital Industries Software|Siemens PLM Software]]).<ref name="prweb-lgs">{{cite web |date=September 22, 2014 |title=Bricsys Makes a Breakthrough in Constraint Solving with Version 9 of LGS 2D/3D Component Technology |url=https://www.prweb.com/releases/bricsys_makes_a_breakthrough_in_constraint_solving_with_version_9_of_lgs_2d_3d_component_technology/prweb12184786.htm |accessdate=2026-09-19 |website=PRWeb}}</ref><ref name="graphicon">{{cite web |title=LGS Geometric Solver |url=https://www.graphicon.ru/html/2005/proceedings/papers/preis_kazakov.pdf |accessdate=2026-09-19 |website=GraphiCon}}</ref>
Starting in 2001, LEDAS developed its own product — the LEDAS Geometric Solver (LGS), initially in a 2D version, with a 3D version released in 2005. The solver was considered the second most widely used geometric constraint solver in the industry, after [[Siemens Digital Industries Software|Siemens PLM Software]]'s [[D-Cubed]]. LGS was licensed to more than ten engineering software vendors worldwide, including [[Cimatron]] (later part of [[3D Systems]]) and [[CD-adapco]] (later part of [[Siemens Digital Industries Software|Siemens PLM Software]]).<ref name="prweb-lgs">{{cite web |date=September 22, 2014 |title=Bricsys Makes a Breakthrough in Constraint Solving with Version 9 of LGS 2D/3D Component Technology |url=https://www.prweb.com/releases/bricsys_makes_a_breakthrough_in_constraint_solving_with_version_9_of_lgs_2d_3d_component_technology/prweb12184786.htm |accessdate=2026-09-19 |website=PRWeb}}</ref><ref name="graphicon">{{cite web |title=LGS Geometric Solver |url=https://www.graphicon.ru/html/2005/proceedings/papers/preis_kazakov.pdf |accessdate=2026-09-19 |website=GraphiCon}}</ref>


In October 2011, [[Menhirs NV]], the parent company of [[Bricsys|Bricsys NV]], acquired the intellectual property rights to LGS 2D, LGS 3D, and several other LEDAS products, including Driving Dimensions and RhinoWorks. As part of the deal, a team of developers led by Dmitry Ushakov continued developing the technology within the newly established subsidiary Bricsys Technologies Russia in Novosibirsk. The acquisition enabled Bricsys to add parametric and direct modeling capabilities to [[BricsCAD]].<ref name="worldcad" /><ref name="bricscad-wiki">{{cite encyclopedia |title=BricsCAD |encyclopedia=Wikipedia |url=https://en.wikipedia.org/wiki/BricsCAD |accessdate=2026-09-19}}</ref>
In October 2011, [[Menhirs NV]], the parent company of [[Bricsys|Bricsys NV]], acquired the intellectual property rights to LGS 2D, LGS 3D, and several other LEDAS products, including Driving Dimensions and RhinoWorks. The acquisition enabled Bricsys to add parametric and direct modeling capabilities to [[BricsCAD]].<ref name="worldcad" /><ref name="bricscad-wiki">{{cite encyclopedia |title=BricsCAD |encyclopedia=Wikipedia |url=https://en.wikipedia.org/wiki/BricsCAD |accessdate=2026-09-19}}</ref>


Between 2011 and 2013, LEDAS begins research and development on the brand-new innovative geometric kernel project.<ref name="isicad-rgk">{{cite web |date=March 27, 2013 |title=First version of the Russian geometric modeling kernel created |url=https://isicad.ru/ru/press_releases.php?press_num=16011 |accessdate=2026-09-19 |website=isicad.ru}}</ref><ref name="isicad-cofes">{{cite web |date=May 27, 2013 |title=Top Systems and LEDAS to showcase RGK 3D kernel at COFES Russia |url=https://web.archive.org/web/20200925100456/http://isicad.ru/ru/press_releases.php?press_num=16153 |accessdate=2026-09-19 |website=isicad.ru (archived)}}</ref><ref name="reestr">{{cite web |title=Geometric Modeling Kernel RGK |url=https://reestr.digital.gov.ru/reestr/2757945/ |accessdate=2026-09-19 |website=Russian Software Registry}}</ref>
In 2011–2012, LEDAS transformed its business mainly into custom software development which appeared to be demanded worldwide. In parallel with service providing, until today, LEDAS develops and distributes its original products LEDAS Cloud Platform, LEDAS Geometry Comparison, and other.


=== Collaboration with ASCON and C3D Labs ===
In recent years, the company has once again transformed its business. Now it is supported by a number of independent entities in Israel, Cyprus, Armenia, Serbia, and other countries.
In 2012–2013, LEDAS and the Russian CAD vendor [[ASCON]] collaborated to implement variational direct modeling technology in [[KOMPAS-3D]], based on the LGS 3D solver acquired by Bricsys. LEDAS also served as an international reseller of the [[C3D]] geometric kernel, developed by C3D Labs, a subsidiary of ASCON.<ref name="kompas-news">{{cite web |title=ASCON to implement variational direct modeling in KOMPAS-3D with LEDAS |url=https://kompas.ru/company/news/items/?news=1118 |accessdate=2026-09-19 |website=kompas.ru}}</ref><ref name="rb-kernel">{{cite web |title=How to build a business on a 3D kernel |url=https://rb.ru/stories/kernel-business/ |accessdate=2026-09-19 |website=RB.ru}}</ref>


=== LEDAS Cloud Platform ===
=== LEDAS Cloud Platform ===
Line 33: Line 24:


== Products and technologies ==
== Products and technologies ==
* '''LEDAS Geometric Solver (LGS 2D/3D)''' — geometric constraint solver for parametric sketching and 3D modeling, developed from 2001 to 2011. After the IP acquisition by Bricsys, the solvers continued to be used in [[BricsCAD]].<ref name="prweb-lgs" /><ref name="nanocad">{{cite web |date=July 21, 2016 |title=Parametrization in nanoCAD Pro based on Bricsys LGS solver |url=https://62soft.ru/news/nanocad/parametrizacija-v-nanocad-bricsys |accessdate=2026-09-19 |website=AllianceSoft}}</ref>


* '''LEDAS Geometric Solver (LGS 2D/3D)''' — geometric constraint solver for parametric sketching and 3D modeling, developed from 2001 to 2011. After the IP acquisition by Bricsys, the solvers continued to be used in [[BricsCAD]] and were licensed by Nanosoft for [[nanoCAD]] Pro.<ref name="prweb-lgs" /><ref name="nanocad">{{cite web |date=July 21, 2016 |title=Parametrization in nanoCAD Pro based on Bricsys LGS solver |url=https://62soft.ru/news/nanocad/parametrizacija-v-nanocad-bricsys |accessdate=2026-09-19 |website=AllianceSoft}}</ref>
* '''LEDAS Geometry Comparison (LGC)''' — technology for comparing 3D models and identifying differences between model versions.<ref name="c3dlabs">{{cite web |title=LEDAS — C3D Toolkit user |url=https://c3dlabs.ru/customers/ledas/ |accessdate=2026-09-19 |website=C3D Labs}}</ref><ref name="rb-kernel">{{cite web |title=How to build a business on a 3D kernel |url=https://rb.ru/stories/kernel-business/ |accessdate=2026-09-19 |website=RB.ru}}</ref>
 
* '''LEDAS Geometry Comparison (LGC)''' — technology for comparing 3D models and identifying differences between model versions, integrated with the C3D geometric kernel.<ref name="c3dlabs">{{cite web |title=LEDAS — C3D Toolkit user |url=https://c3dlabs.ru/customers/ledas/ |accessdate=2026-09-19 |website=C3D Labs}}</ref><ref name="rb-kernel" />


* '''LEDAS Cloud Platform (LCP)''' — cloud platform for building web-based 3D modeling applications with real-time collaboration support.<ref name="isicad-lcp" /><ref name="pressreleasepoint" />
* '''LEDAS Cloud Platform (LCP)''' — cloud platform for building web-based 3D modeling applications with real-time collaboration support.<ref name="isicad-lcp" /><ref name="pressreleasepoint" />
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Co-founder and chairman of the board of directors is David Levin, who stepped down as CEO in 2011.<ref name="isicad-portret" /><ref name="cadpoint" />
Co-founder and chairman of the board of directors is David Levin, who stepped down as CEO in 2011.<ref name="isicad-portret" /><ref name="cadpoint" />


The founders of LEDAS LLC hold the following ownership stakes: D. Levin (51%), E. Kuznetsov (31%), A. Ershov (14%), and D. Ushakov (4%). The company was registered on January 9, 2020, through the transformation of Closed Joint-Stock Company LEDAS.<ref name="checko" /><ref name="tochka">{{cite web |title=LEDAS LLC, Novosibirsk, INN 5408026220 |url=https://check.tochka.com/company/1205400000013/ |accessdate=2026-09-19 |website=Tochka}}</ref>
== References ==
 
{{Reflist}}
== Financial data ==
According to financial reporting for 2025, LEDAS LLC had a revenue of 122.5 million [[Russian ruble|RUB]] (a 12% decrease from 2024) and a net loss of 12.4 million RUB. The average number of employees was 62. The company is classified as a small enterprise and uses the [[simplified tax system]].<ref name="checko" /><ref name="rbc" /><ref name="b2b">{{cite web |title=LEDAS LLC — financial indicators |url=https://b2b.house/company/OOO-LEDAS_e9e69ac0-bf17-46ce-b943-a43eb5a516c1/ |accessdate=2026-09-19 |website=B2B.house}}</ref>
 
== Related entities ==
 
* '''LEDAS R&D Services''' (LLC) — a related company registered in December 2015 at the same address; CEO is also A. Ershov.<ref name="rbc-rd">{{cite web |title=LEDAS R&D Services LLC |url=https://companies.rbc.ru/id/1155476140764-ooo-ledas-er-end-di-servisez/ |accessdate=2026-09-19 |website=RBC Companies}}</ref>
 
== See also ==
 
* [[Dassault Systèmes]]
* [[CATIA]]
* [[Bricsys]]
* [[C3D Labs]]
* [[KOMPAS-3D]]
* [[Russian Geometric Kernel]]


== References ==
[[Category:Software companies established in 1999]]
{{Reflist|colwidth=30em}}

Latest revision as of 18:57, 29 September 2026

LEDAS is an independent software development company with offices in four countries and more than 120 developers.

It specializes in custom CAD, CAM, BIM, digital healthcare, and 3D modeling software. Founded in 1999, the company is best known for its 12-year partnership with Dassault Systèmes, during which it contributed to the development of key components of the CATIA CAD system, and for creating the LGS 2D/3D geometric constraint solvers, whose intellectual property was acquired by Bricsys NV in 2011.[1][2][3]

History

Founding and Dassault Systèmes partnership

LEDAS was founded in 1999 a group of academics with backgrounds in artificial intelligence (AI) and mathematics. The first CEO was David Levin, PhD in computer science and mathematics[4][5]

In the same year, LEDAS signed a long-term contract with the French company Dassault Systèmes, a global leader in the PLM/CAD market. Over the course of this 12-year partnership, the LEDAS team contributed to the development of key components of the CATIA V5 and V6 systems, including the CGM geometric modeling kernel and the Constraint Design Solver (CDS). The team also worked on the end-user modules CATIA Product Engineering Optimizer and CATIA Knowledge Advisor. The total volume of work under these contracts exceeded 100 person-years.[1][6]

LGS geometric solvers and the Bricsys acquisition

Starting in 2001, LEDAS developed its own product — the LEDAS Geometric Solver (LGS), initially in a 2D version, with a 3D version released in 2005. The solver was considered the second most widely used geometric constraint solver in the industry, after Siemens PLM Software's D-Cubed. LGS was licensed to more than ten engineering software vendors worldwide, including Cimatron (later part of 3D Systems) and CD-adapco (later part of Siemens PLM Software).[7][8]

In October 2011, Menhirs NV, the parent company of Bricsys NV, acquired the intellectual property rights to LGS 2D, LGS 3D, and several other LEDAS products, including Driving Dimensions and RhinoWorks. The acquisition enabled Bricsys to add parametric and direct modeling capabilities to BricsCAD.[2][9]

In 2011–2012, LEDAS transformed its business mainly into custom software development which appeared to be demanded worldwide. In parallel with service providing, until today, LEDAS develops and distributes its original products LEDAS Cloud Platform, LEDAS Geometry Comparison, and other.

In recent years, the company has once again transformed its business. Now it is supported by a number of independent entities in Israel, Cyprus, Armenia, Serbia, and other countries.

LEDAS Cloud Platform

In 2017, LEDAS released the LEDAS Cloud Platform (LCP), a client–server platform for developing web-based 3D modeling applications. LCP supports real-time collaborative editing of 3D models in a browser environment, with support for STEP (MCAD), IFC (BIM), STL (3D printing and polygonal meshes), and XYZ (point cloud) formats.[10][11]

Products and technologies

  • LEDAS Geometric Solver (LGS 2D/3D) — geometric constraint solver for parametric sketching and 3D modeling, developed from 2001 to 2011. After the IP acquisition by Bricsys, the solvers continued to be used in BricsCAD.[7][12]
  • LEDAS Geometry Comparison (LGC) — technology for comparing 3D models and identifying differences between model versions.[13][14]
  • LEDAS Cloud Platform (LCP) — cloud platform for building web-based 3D modeling applications with real-time collaboration support.[10][11]

Leadership

The current CEO is Alexey Ershov, who has been with the company since its founding in 1999 and has served as CEO since 2011.[17][18]

Co-founder and chairman of the board of directors is David Levin, who stepped down as CEO in 2011.[5][4]

References

  1. ↑ 1.0 1.1 "Russia is the Land of Engineering Software Development". https://isicad.net/articles.php?article_num=20905. Retrieved on 2026-09-19. 
  2. ↑ 2.0 2.1 "Exclusive Q&A: What it means, now that Bricsys bought IP from Ledas". October 2011. https://www.worldcadaccess.com/blog/2011/10/exclusive-qa-what-it-means-now-that-bricsys-bought-ip-from-ledas.html. Retrieved on 2026-09-19. 
  3. ↑ Ledas Finds Life After Dassault Systemes
  4. ↑ 4.0 4.1 "LEDAS marks its tenth anniversary and makes 3D variational direct modeling technologies more accessible". April 1, 2009. https://cadpoint.ru/item/64-------3d-----. Retrieved on 2026-09-19. 
  5. ↑ 5.0 5.1 "A portrait of a Novosibirsk company in the interior of the global CAD and PLM market". https://isicad.ru/ru/articles.php?article_num=15615. Retrieved on 2026-09-19. 
  6. ↑ "Russia is a global CAD development center". October 30, 2019. https://habr.com/ru/articles/473694/. Retrieved on 2026-09-19. 
  7. ↑ 7.0 7.1 "Bricsys Makes a Breakthrough in Constraint Solving with Version 9 of LGS 2D/3D Component Technology". September 22, 2014. https://www.prweb.com/releases/bricsys_makes_a_breakthrough_in_constraint_solving_with_version_9_of_lgs_2d_3d_component_technology/prweb12184786.htm. Retrieved on 2026-09-19. 
  8. ↑ "LGS Geometric Solver". https://www.graphicon.ru/html/2005/proceedings/papers/preis_kazakov.pdf. Retrieved on 2026-09-19. 
  9. ↑ Template:Cite encyclopedia
  10. ↑ 10.0 10.1 "LEDAS continues its L-series: cloud platform LCP available for licensing". October 23, 2017. https://isicad.ru/ru/articles.php?article_num=19493. Retrieved on 2026-09-19. 
  11. ↑ 11.0 11.1 "LEDAS Ships New Cloud Platform with Real-time 3D Collaboration". October 23, 2017. https://www.pressreleasepoint.com/ledas-ships-new-cloud-platform-real-time-3d-collaboration. Retrieved on 2026-09-19. 
  12. ↑ "Parametrization in nanoCAD Pro based on Bricsys LGS solver". July 21, 2016. https://62soft.ru/news/nanocad/parametrizacija-v-nanocad-bricsys. Retrieved on 2026-09-19. 
  13. ↑ "LEDAS — C3D Toolkit user". https://c3dlabs.ru/customers/ledas/. Retrieved on 2026-09-19. 
  14. ↑ "How to build a business on a 3D kernel". https://rb.ru/stories/kernel-business/. Retrieved on 2026-09-19. 
  15. ↑ "LEDAS, LLC — Novosibirsk Akademgorodok Technopark". https://academpark.com/residents/23411/. Retrieved on 2026-09-19. 
  16. ↑ "LEDAS company profile". https://career.habr.com/companies/ledas. Retrieved on 2026-09-19. 
  17. ↑ "LEDAS LLC — Novosibirsk — INN 5408026220". https://checko.ru/company/ledas-1205400000013. Retrieved on 2026-09-19. 
  18. ↑ "LEDAS LLC — Novosibirsk". https://companies.rbc.ru/id/1205400000013-obschestvo-s-ogranichennoj-otvetstvennostyu-ledas/. Retrieved on 2026-09-19. 
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